A leading software for simulation of plastic parts is Moldex3D from the company Coretech System.
It helps e.g. to validate the part design, balance the filling, choose the correct machine, check the cooling layout and warpage prediction.
The results can be exported directly to a structural mechanics program.
The 3D meshing allows simulation of other applications like GAIM/WAIM, Foaming and ICM, next to the traditional injection molding.